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preface to fifteenth edition

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7.8 SECTION 7<br />

TABLE 7.3<br />

Critical X-Ray Absorption Energies in keV<br />

A<strong>to</strong>mic<br />

No. Element K L I L II L III<br />

1 H 0.0136<br />

2 He 0.0246<br />

3 Li 0.0547<br />

4 Be 0.112<br />

5 B 0.187<br />

6 C 0.284<br />

7 N 0.400<br />

8 O 0.532<br />

9 F0.692<br />

10 Ne 0.874 0.048 0.022<br />

11 Na 1.08 0.055 0.034<br />

12 Mg 1.30 0.0628 0.0502<br />

13 Al 1.559 0.0870 0.0720<br />

14 Si 1.838 0.118 0.0977<br />

15 P 2.142 0.153 0.128<br />

16 S 2.469 0.193 0.163 0.162<br />

17 Cl 2.822 0.238 0.202 0.201<br />

18 Ar 3.200 0.287 0.246 0.244<br />

19 K 3.606 0.341 0.295 0.292<br />

20 Ca 4.038 0.399 0.350 0.346<br />

21 Sc 4.496 0.462 0.411 0.407<br />

22 Ti 4.966 0.530 0.462 0.456<br />

23 V 5.467 0.604 0.523 0.515<br />

24 Cr 5.988 0.679 0.584 0.574<br />

25 Mn 6.542 0.762 0.656 0.644<br />

26 Fe 7.113 0.849 0.722 0.709<br />

27 Co 7.713 0.929 0.798 0.783<br />

28 Ni 8.337 1.02 0.877 0.858<br />

29 Cu 8.982 1.10 0.954 0.935<br />

30 Zn 9.662 1.20 1.05 1.02<br />

31 Ga 10.39 1.30 1.17 1.14<br />

32 Ge 11.10 1.42 1.24 1.21<br />

33 As 11.87 1.529 1.358 1.32<br />

34 Se 12.65 1.66 1.472 1.431<br />

35 Br 13.48 1.791 1.599 1.552<br />

36 Kr 14.32 1.92 1.729 1.674<br />

37 Rb 15.197 2.064 1.863 1.803<br />

38 Sr 16.101 2.212 2.004 1.937<br />

39 Y 17.053 2.387 2.171 2.096<br />

40 Zr 17.998 2.533 2.308 2.224<br />

41 Nb 18.986 2.700 2.467 2.372<br />

42 Mo 20.003 2.869 2.630 2.525<br />

43 Tc 21.050 3.045 2.796 2.680

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